How to fix unfortunately settings has stopped working in android-unfortunately settings has stopped android,this method is working in micromax,sony xperia,lenovo,htc,samsung,panasonic and all other android devices-unfortunately settings has stopped android error and this error is fixed in jelly bean,kitkat,lollipop.
Goto settings-apps-all-setting and settings-apps-all-setting storage
click clear data and then click force stop.
click clear data option and then your launcher is restarted.
finally once reboot your android the error is fixed.